I wish they were on 51.4 in/51.9 out... wouldn't hurt to have a spare set. And no, they don't have enough adjustment built-in without the suppression numbers going in the toilet. First notch I made ended up just below 51.7, and just couldn't get good numbers when I moved it that far... so I cut a little off the bottom til I got where I needed to be.
Someone who has that pair should grab them... as John says.. they work very well! 73's Mike At 09:41 AM 03/17/2004 -0500, you wrote: >I built some notch filters out of 1-5/8 heliax as described on WB5WPA's page. >They worked very well, only I was having some problems with drastic >changes in temperature. The would be fine in an air-conditioned and heated >environment. >I have decided to go with a vertical separation instead of duplexers for >my project, based on the ideal tower situation I have been handed that >would not have given room for such bulky items anyway. But I would >recommend this type of design for anyone who wants to build a duplexer the >easy way. >Tools needed: soldering gun, hack saw, frequency generator (I used the MFJ >antenna tuner, and did final tuning with exciter power from an old >mobile.) Spectrum monitor if you know where to get one, but you can use a >receiver with an attenuator and a s-meter. Check out the website that was >mentioned earlier: http://www.dallas.net/~jvpoll/dup6m/dup6m.html >It told me everything I needed to know. I will be happy to talk with >anyone interested in doing this. Heck, I'll even give you a set tuned to 51.7! > > >John Clark - KI4AWK >Thomasville, GA >[EMAIL PROTECTED] > > > > > > >Yahoo! Groups Links > > > > --------------------------------------------------------------------- Mike Perryman Cavell, Mertz & Davis, Inc. [EMAIL PROTECTED] Consulting Engineers http://www.cmdconsulting.com 7839 Ashton Avenue K5JMP Manassas, VA 20109 USA (703) 392-9090; (703) 392-9559 fax; DC Line (202) 332-0110 --------------------------------------------------------------------- Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
